
Full-Stack Software Engineer (Java + React)
Grid Dynamics
Warsaw, Maz, Poland • 27m ago • On-site
Mid
On-site
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Quick Facts
Role: Full-Stack Software Engineer (Java + React)
Description
Join an engineering pod to deliver modern digital payment and transaction-processing solutions across the full stack. You will architect microservices with Java/Spring Boot, build micro frontend interfaces with React/TypeScript, integrate mission-critical RESTful APIs, and implement enterprise fintech security. The role focuses on high-volume, secure operations using automated testing and CI/CD.
Role description / Responsibilities
Design, implement, and maintain scalable full-stack features with Java, Spring Boot, React, and TypeScript
Architect and integrate robust RESTful APIs using OpenAPI/Swagger for backward-compatible, high-throughput data exchange
Design relational schemas and persistence layers using SQL, Spring Data JPA, and Hibernate (PostgreSQL/MySQL)
Implement authentication, authorization, and data-protection using Spring Security, OAuth 2.0, and JWT
Write unit and integration tests across the stack (Jest, React Testing Library, JUnit, Mockito, Spring Boot Test)
Package services into Docker containers and automate CI/CD using GitHub Actions or Jenkins
Requirements
Strong hands-on frontend experience with JavaScript (ES6+), TypeScript, HTML5, CSS3, React, and Redux/Redux Toolkit
Solid commercial backend experience with Java (8+ / 11+ / 17+), Spring Boot, and core Spring Framework
Hands-on experience with relational databases (PostgreSQL or MySQL), SQL optimization, Spring Data JPA, and Hibernate
Proven REST API development/consumption experience using OpenAPI/Swagger in a microservices architecture
Working knowledge of Spring Security, OAuth 2.0, JWT, and role-based access control
Practical testing experience: Jest + React Testing Library; JUnit + Mockito + Spring Boot Test
Proficiency with Git, Maven or Gradle, npm, Docker, and CI/CD via GitHub Actions or Jenkins
Experience working autonomously in an Agile/Scrum workflow
Benefits
Opportunity to work on cutting-edge projects
Competitive salary
Flexible schedule
Medical insurance and sports benefits
Corporate social events
Professional development opportunities
Well-equipped office
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